Available Emc Classes - Danfoss Vacon NXP Series Operating Manual

Operating guide | VACON® NXS/NXP Air-cooled

3.7 Available EMC Classes

The product standard (EMC immunity requirements) IEC/EN 61800-3 + A1 has 5 categories. The VACON
EMC classes that have equivalents in the standard. All VACON
The type code tells which category requirement the AC drive complies with (see
The category changes when these properties in the AC drive change:
• the level of electromagnetic disturbances
• the requirements of a power system network
• the installation environment (see the standard IEC/EN 61800-3 + A1)
Table 5: Available EMC Classes
EMC class
®
VACON
in IEC/EN
equiva-
61800-3 +
lent
A1
EMC
class
C1 C
C2 H
C3 L
C4 T
22 | Danfoss A/S © 2018.06
Description
The best EMC protection. These AC drives have the nominal voltage of less than 1000
V. They are used in the 1st environment.
If the protection rating of the AC drive is IP21 (UL Type 1), only the conducted
emissions are in the requirements of category C1.
Includes AC drives in fixed installations. These AC drives have the nominal voltage of
less than 1000 V. The category C2 AC drives can be used in the 1st and the 2nd envi-
ronment.
Includes AC drives that have the nominal voltage of less than 1000 V. These AC drives
are used in the 2nd environment only.
These AC drives comply with the standard IEC/EN 61800-3 + A1 if they are used in IT
systems. In IT systems, the networks are isolated from ground, or connected to
ground through high impedance to decrease the leakage current.
If the AC drives are used with other supplies, they do not comply with the EMC
requirements.
To change the EMC class of the VACON® NX AC drive from C2 or C3 to C4, see the
instructions in 6.6 Installation in an IT
®
NX AC drives comply with the standard IEC/EN 61800-3 + A1.
3.4 Description of the Type
N O T I C E
N O T I C E
System.
Product Overview
®
AC drives are divided into 5
Code).
Available for
380–500 V, FR4
to FR6, IP54 (UL
Type 12)
380–500 V, FR4
to FR9 and
208–240 V, FR4
to FR9
IP21 (UL Type
1) and IP54 (UL
Type 12) in
380–500 V
FR10 and larg-
er, 525–690 V
FR6 and larger
All products
DPD00910G